mongodb 2.8.2

The official MongoDB driver for Rust
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141

#![allow(clippy::cast_possible_truncation)]
#![allow(clippy::cast_possible_wrap)]

use std::time::Duration;

use crate::{
    bson::{doc, Bson},
    cmap::StreamDescription,
    coll::{options::DistinctOptions, Namespace},
    error::ErrorKind,
    operation::{
        test::{self, handle_response_test},
        Distinct,
        Operation,
    },
};

#[test]
fn build() {
    let field_name = "field_name".to_string();
    let ns = Namespace {
        db: "test_db".to_string(),
        coll: "test_coll".to_string(),
    };
    let mut distinct_op = Distinct::new(ns, field_name.clone(), None, None);
    let distinct_command = distinct_op
        .build(&StreamDescription::new_testing())
        .expect("error on build");
    assert_eq!(
        distinct_command.body,
        doc! {
            "distinct": "test_coll",
            "key": field_name
        }
    );
    assert_eq!(distinct_command.target_db, "test_db");
}

#[test]
fn build_with_query() {
    let field_name = "field_name".to_string();
    let query = doc! {"something" : "something else"};
    let ns = Namespace {
        db: "test_db".to_string(),
        coll: "test_coll".to_string(),
    };
    let mut distinct_op = Distinct::new(ns, field_name.clone(), Some(query.clone()), None);
    let distinct_command = distinct_op
        .build(&StreamDescription::new_testing())
        .expect("error on build");
    assert_eq!(
        distinct_command.body,
        doc! {
            "distinct": "test_coll",
            "key": field_name,
            "query": Bson::Document(query)
        }
    );
    assert_eq!(distinct_command.target_db, "test_db");
}

#[test]
fn build_with_options() {
    let field_name = "field_name".to_string();
    let max_time = Duration::new(2_u64, 0);
    let options: DistinctOptions = DistinctOptions::builder().max_time(max_time).build();
    let ns = Namespace {
        db: "test_db".to_string(),
        coll: "test_coll".to_string(),
    };
    let mut distinct_op = Distinct::new(ns, field_name.clone(), None, Some(options));
    let distinct_command = distinct_op
        .build(&StreamDescription::new_testing())
        .expect("error on build");

    assert_eq!(
        distinct_command.body,
        doc! {
            "distinct": "test_coll",
            "key": field_name,
            "maxTimeMS": max_time.as_millis() as i32
        }
    );
    assert_eq!(distinct_command.target_db, "test_db");
}

#[test]
fn op_selection_criteria() {
    test::op_selection_criteria(|selection_criteria| {
        let options = DistinctOptions {
            selection_criteria,
            ..Default::default()
        };
        Distinct::new(Namespace::empty(), String::new(), None, Some(options))
    });
}

#[test]
fn handle_success() {
    let distinct_op = Distinct::empty();

    let expected_values: Vec<Bson> =
        vec![Bson::String("A".to_string()), Bson::String("B".to_string())];

    let response = doc! {
       "values" : expected_values.clone(),
       "ok" : 1
    };

    let actual_values = handle_response_test(&distinct_op, response).unwrap();
    assert_eq!(actual_values, expected_values);
}

#[test]
fn handle_response_with_empty_values() {
    let distinct_op = Distinct::empty();

    let response = doc! {
       "values" : [],
       "ok" : 1
    };

    let expected_values: Vec<Bson> = Vec::new();
    let actual_values = handle_response_test(&distinct_op, response).unwrap();
    assert_eq!(actual_values, expected_values);
}

#[test]
fn handle_response_no_values() {
    let distinct_op = Distinct::empty();

    let response = doc! {
       "ok" : 1
    };

    let result = handle_response_test(&distinct_op, response);
    match result.map_err(|e| *e.kind) {
        Err(ErrorKind::InvalidResponse { .. }) => {}
        other => panic!("expected response error, but got {:?}", other),
    }
}